body {
    margin: 0;
    padding: 0;
}

a {
    color: #646464;
    text-decoration: none;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

.clearfix:after,
.clearfix {
    content: '';
    display: block;
    clear: both;
}

.continer {
    margin: 0 auto;
}

.continer .top,
.continer .body,
.continer .nav {
    width: 1000px;
    margin: 0 auto;
}

.continer .top {
    height: 105px;
}

.continer>.nav {
    height: 70px;
    width: 100%;
    line-height: 70px;
    border-bottom: 1px solid grey;
}

.continer .nav a {
    margin-right: 20px;
    font-size: 16px;
    font-weight: 700;
}

.imgcontiner {
    width: 100%;
    height: 0;
    overflow: hidden;
}

.imgcontiner img {
    width: 100%;
}

.banner .imgcontiner {
    padding-bottom: 20%;
}

.body .imgcontiner {
    padding-bottom: 150%;
}

.body .item {
    width: 25%;
    float: left;
    padding: 0 15px;
    box-sizing: border-box;
}

.mb15px {
    margin-bottom: 15px !important;
}

.text-center {
    text-align: center;
}

.item .pro_name {
    margin: 5px 0;
}

.item .pro_price {
    color: red;
    display: block;
}

.btn {
    background: #333;
    color: #fff;
    display: block;
    padding: 5px;
    border-radius: 5px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    -ms-border-radius: 5px;
    -o-border-radius: 5px;
}

.footer {
    background-image: url(../images/footerbg.jpg);
    height: 173px;
}
